Fuel mixture for internal-combustion engines



i UNITE-D STA JOSEPH BABE, F PITTSBURGH, PENNSYLVANIA, ASSIGNOR T0 WAVERLY 0H1:

WORKS COMPANY, OF PITTSBURGH, PENNSYLVANIA, A CORPORATION 0F BENN- FUEL MIXTURE ron rnrnnnaL-oorrnusrron emes;

No Drawing.

2 '0 all whom it may concern:

lBe it known that I, J'osnrn E. BABE, a citizen of the United States, and a resident at Pittsburgh, in the county of Allegheny l and State of Pennsylvania, have invented a new and usefulllmprovement in Fuel Mixtures forInternal-Combustion Engines; and l do hereby declare the following to be a full, clear, and exact description thereof.

My invention relates to a mixture that may be added to the usual fuels 01: internal combustion engines for the purpose of effecting more uniform compression and for permitting increased compression in the engine cylinders without producing knocking.

Heretofore it has been proposed to add to gasolene andlike motor fuels lead composi tions that are soluble in gasolene and the like, to increase the efiectiveness of such fuel. One objection to these mixtures arises from the fact that metallic lead is liberated by the explosion in "the engine cylinder and this liberated ead collects upon the sparking contacts an elsewhere in the engine and the exhaust line, interfering with the proper operation of the engine; These lead mixtures have been designated in-my copending applications, Serial No. 7 56,071, filed December 15, 1924, and Serial No. 9,301, filed February 14;, 1925, as lead soap and may consist of rosin oil, which is a distillation product of rosin, and an oxide of lead such as litharge, or the like.

Application filed April 22, 1925.

One object or my invention is to provide a mixture wherein an acid-carrying compound is employed in connection with the soap mixture or in the fuel which the soap is added, for. the purpose of rendering the lead volatile or gaseous n on explosion in;

the cylinder, so that it will be carried oil through the exhaust, and thereby be prevented trom accumulating in the engine cylinder. a

Another object ofimy invention is to improve generally the effectiveness of fuel mixtures employed in internal combustion engines and the like.

Serial No. 25,136;

in other fuel mixtures with satisfactory results.

One composition which. may be employed to increase the effectiveness of gasolene, benzol and the like, comprises a soap composed of 100 parts rosin oil and parts litharge. The litharge combines with the acids of the rosin oil and forms what is known as lead rosin oil soap. To 100 parts of this soap parts of free oleic acid, or red oil is a zero parafiine oil, kerosene, benzol,-xylol, or the like, one of which may be added to the soap in a quantity substantially equal to the quantity of oleic acid employed. The ior'egoing mixture is added to the mainbody of the motor fuel, preferably in suchquantity v added. This mixture is somewhat viscous Iand may be diluted witlifasolvent such as sparking contactscas above explained. Heretofo e, halogen carriers such as carbon tetrach 'oride have been employed for efi'ecting volatilization of the liberated lead, so that it would be carried away with theexhaust gases. carrying compound such as nitrobenzol (commonly. known also as oil of mirbane) is mixed with the fuel into whiclrthe lead mixture is introduced, in quantities sufi l have discovered that if an acid, p

cient to'chemically unite with the lead present after an explosion in the en ."ne cylin der, the liberated lead willbe ren ered vols tile or gaseous'and be carried 0d with the exhaust gases of the engine.

such. as nitrobenzol because it has a greater afinity for the lead than do the Various The nitrol benzol may be introduced into the main halogen carriers heretofore 'em loyed, 'and' therefore more effectively volati izes the liberated lead. One mixture 'which' l have found to be e'ifective in the volatilization of s the lead liberatedby the explosions in. the

In order to enable my invention to be moreclearly understood, I will describe one of the l lead soap mixtures with which my acidcarrying element may be employed, it bein understoodthat such a carrier maybe use motor consists of 39.44% rosin oi1, 5.917%

PbO, 25.6+% oleic acid, 22.419% xylol, 6.57% nitrobenzol. This mixture when exposed over night to a temperature from 10 to 15 F. does not show a precipitate.

The nitrobenzol may also be employed in yarious other mixtures, such 'for instance hydrocarbon fuels.

as those wherein solvents such as, kerosene, benzol or zero parafline 011 are substituted for the zero parafline 011, but these latter IILIX- tures mayshow precipitation upon exposure to low temperatures, although such precipitation will again be taken up in solution when the temperature rises.

Also, I do not limit myself to the employment of nitrobenzol as a volatilizing agent, but may use instead thereof an organic acid carrying compound such as ethyl sulphate or methyl sulphate, or any acid organic compounds of nitric acid or sulphuric acid that are soluble or miscible in I claim as my invention:

1. In a fuel mixture'for internal, combustion engines, the combination with a lead oxide, ofan organic acid compound in quantitysutiicient to chemically unite with the lead present after combustion, for rendering .nitrobenzene in quantity suflicient to volatilize the lead liberated upon explosion of the mixture.

4. In a fuel mixture for internal combustion engines, the combination with a distillation product of rosin and a lead oxide, of an organic acidcarrying compound in quantity, sufficient to volatilize the. lead which is liberated upon explosion of the mixture.

' 5. In a fuel mixture for internal c0mbus' tion engines, the combination with a hydro carbon fuel having a lead oxide,- of nitrobenzene in sutficient quantity in orderto chemically unite with the lead present after combustion, for rendering the lead volatile.

In testimony whereof I, the said JosErH E. BABE, have hereunto set my hand. I JOSEPH E. BABB. 

